T. Niimi

Morphological Study of Left-right Head Asymmetry in Doubledaya bucculenta (Coleoptera: Erotylidae: Languriinae)

This study examines left-right asymmetry in the mouthparts of Doubledaya bucculenta, finding asymmetry in mandibles, genae, maxillae, and labium, with varying degrees and potential developmental influences.

Evolution of horn length and lifting strength in the Japanese rhinoceros beetle Trypoxylus dichotomus

The paper studies the evolution of horn length and lifting strength in Trypoxylus dichotomus, showing independent increases in horn length in Northern and Southern lineages with mechanical trade-offs and compensatory changes.

Evolutionary history of sexual differentiation mechanism in insects

The paper investigates the evolutionary history of the doublesex gene in insects, finding it initially promoted male differentiation but later acquired female-specific functions in holometabolan species.

Evolutionary origin of sex differentiation system in insects

The paper investigates the evolutionary origin of insect sex differentiation systems by analyzing the ancestral function of doublesex in Thermobia domestica, revealing functional discordance between phenotypic and transcriptional levels.

Evolutionary transition of doublesex regulation in termites and cockroaches: from sex-specific splicing to male-specific transcription

This study investigates the evolutionary transition of dsx regulation in termites and cockroaches, finding a shift from sex-specific splicing to male-specific transcription in termites.

Repeated inversions at the pannier intron drive diversification of intraspecific colour patterns of ladybird beetles

The paper identifies pannier as a key regulatory gene for color pattern variation in ladybird beetles and shows that inversions and cis-regulatory changes at this gene drive intraspecific diversity.